./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-crafted/mapsum4.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-crafted/mapsum4.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d00a4e4676c9051eb624340f361fec0d607bdb13ab2955b117561fab63156730 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-21 20:52:21,465 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-21 20:52:21,502 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-21 20:52:21,505 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-21 20:52:21,506 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-21 20:52:21,521 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-21 20:52:21,522 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-21 20:52:21,522 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-21 20:52:21,523 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-21 20:52:21,523 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-21 20:52:21,523 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-21 20:52:21,523 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-21 20:52:21,524 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-21 20:52:21,525 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-21 20:52:21,526 INFO L153 SettingsManager]: * Use SBE=true [2024-11-21 20:52:21,526 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-21 20:52:21,526 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-21 20:52:21,527 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-21 20:52:21,527 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-21 20:52:21,527 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-21 20:52:21,527 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-21 20:52:21,530 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-21 20:52:21,531 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-21 20:52:21,531 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-21 20:52:21,531 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-21 20:52:21,531 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-21 20:52:21,532 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-21 20:52:21,532 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-21 20:52:21,532 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-21 20:52:21,532 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-21 20:52:21,532 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-21 20:52:21,533 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-21 20:52:21,533 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-21 20:52:21,533 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-21 20:52:21,533 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-21 20:52:21,533 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-21 20:52:21,534 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-21 20:52:21,534 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-21 20:52:21,537 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-21 20:52:21,537 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-21 20:52:21,537 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-21 20:52:21,538 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-21 20:52:21,538 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d00a4e4676c9051eb624340f361fec0d607bdb13ab2955b117561fab63156730 [2024-11-21 20:52:21,731 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-21 20:52:21,752 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-21 20:52:21,756 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-21 20:52:21,757 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-21 20:52:21,757 INFO L274 PluginConnector]: CDTParser initialized [2024-11-21 20:52:21,759 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-crafted/mapsum4.i [2024-11-21 20:52:23,068 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-21 20:52:23,258 INFO L384 CDTParser]: Found 1 translation units. [2024-11-21 20:52:23,259 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-crafted/mapsum4.i [2024-11-21 20:52:23,264 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a84aab7c/28dfca536ecd4957baba992a03f61d50/FLAGa99c4bbf5 [2024-11-21 20:52:23,657 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a84aab7c/28dfca536ecd4957baba992a03f61d50 [2024-11-21 20:52:23,660 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-21 20:52:23,661 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-21 20:52:23,662 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-21 20:52:23,662 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-21 20:52:23,667 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-21 20:52:23,667 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 08:52:23" (1/1) ... [2024-11-21 20:52:23,670 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51010ba1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:52:23, skipping insertion in model container [2024-11-21 20:52:23,670 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 08:52:23" (1/1) ... [2024-11-21 20:52:23,688 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-21 20:52:23,825 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-crafted/mapsum4.i[1318,1331] [2024-11-21 20:52:23,829 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-21 20:52:23,835 INFO L200 MainTranslator]: Completed pre-run [2024-11-21 20:52:23,852 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-crafted/mapsum4.i[1318,1331] [2024-11-21 20:52:23,853 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-21 20:52:23,867 INFO L204 MainTranslator]: Completed translation [2024-11-21 20:52:23,867 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:52:23 WrapperNode [2024-11-21 20:52:23,867 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-21 20:52:23,868 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-21 20:52:23,868 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-21 20:52:23,868 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-21 20:52:23,874 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:52:23" (1/1) ... [2024-11-21 20:52:23,886 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:52:23" (1/1) ... [2024-11-21 20:52:23,900 INFO L138 Inliner]: procedures = 16, calls = 22, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 69 [2024-11-21 20:52:23,900 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-21 20:52:23,901 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-21 20:52:23,901 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-21 20:52:23,901 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-21 20:52:23,910 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:52:23" (1/1) ... [2024-11-21 20:52:23,910 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:52:23" (1/1) ... [2024-11-21 20:52:23,911 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:52:23" (1/1) ... [2024-11-21 20:52:23,923 INFO L175 MemorySlicer]: Split 12 memory accesses to 2 slices as follows [2, 10]. 83 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 5 writes are split as follows [0, 5]. [2024-11-21 20:52:23,923 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:52:23" (1/1) ... [2024-11-21 20:52:23,923 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:52:23" (1/1) ... [2024-11-21 20:52:23,927 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:52:23" (1/1) ... [2024-11-21 20:52:23,930 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:52:23" (1/1) ... [2024-11-21 20:52:23,931 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:52:23" (1/1) ... [2024-11-21 20:52:23,932 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:52:23" (1/1) ... [2024-11-21 20:52:23,933 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-21 20:52:23,934 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-21 20:52:23,934 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-21 20:52:23,934 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-21 20:52:23,935 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:52:23" (1/1) ... [2024-11-21 20:52:23,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-21 20:52:23,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 20:52:23,964 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-21 20:52:23,966 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-21 20:52:24,003 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-21 20:52:24,004 INFO L130 BoogieDeclarations]: Found specification of procedure mapsum [2024-11-21 20:52:24,004 INFO L138 BoogieDeclarations]: Found implementation of procedure mapsum [2024-11-21 20:52:24,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-21 20:52:24,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-21 20:52:24,004 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-21 20:52:24,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-21 20:52:24,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-21 20:52:24,005 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-21 20:52:24,005 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-21 20:52:24,005 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-21 20:52:24,005 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-21 20:52:24,005 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-21 20:52:24,060 INFO L238 CfgBuilder]: Building ICFG [2024-11-21 20:52:24,061 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-21 20:52:24,155 INFO L? ?]: Removed 14 outVars from TransFormulas that were not future-live. [2024-11-21 20:52:24,156 INFO L287 CfgBuilder]: Performing block encoding [2024-11-21 20:52:24,180 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-21 20:52:24,180 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-21 20:52:24,181 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 08:52:24 BoogieIcfgContainer [2024-11-21 20:52:24,181 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-21 20:52:24,185 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-21 20:52:24,185 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-21 20:52:24,188 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-21 20:52:24,188 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 08:52:23" (1/3) ... [2024-11-21 20:52:24,190 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f90a9ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 08:52:24, skipping insertion in model container [2024-11-21 20:52:24,190 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:52:23" (2/3) ... [2024-11-21 20:52:24,190 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f90a9ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 08:52:24, skipping insertion in model container [2024-11-21 20:52:24,190 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 08:52:24" (3/3) ... [2024-11-21 20:52:24,194 INFO L112 eAbstractionObserver]: Analyzing ICFG mapsum4.i [2024-11-21 20:52:24,213 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-21 20:52:24,213 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-21 20:52:24,259 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-21 20:52:24,264 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@15be79b6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-21 20:52:24,264 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-21 20:52:24,268 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 21 states have (on average 1.380952380952381) internal successors, (29), 22 states have internal predecessors, (29), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-21 20:52:24,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-21 20:52:24,274 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:52:24,274 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:52:24,275 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:52:24,279 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:52:24,279 INFO L85 PathProgramCache]: Analyzing trace with hash -864475220, now seen corresponding path program 1 times [2024-11-21 20:52:24,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:52:24,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798519906] [2024-11-21 20:52:24,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 20:52:24,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:52:24,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 20:52:24,537 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-21 20:52:24,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:52:24,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798519906] [2024-11-21 20:52:24,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798519906] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 20:52:24,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 20:52:24,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 20:52:24,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712147076] [2024-11-21 20:52:24,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 20:52:24,544 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 20:52:24,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:52:24,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 20:52:24,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 20:52:24,561 INFO L87 Difference]: Start difference. First operand has 27 states, 21 states have (on average 1.380952380952381) internal successors, (29), 22 states have internal predecessors, (29), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-21 20:52:24,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:52:24,601 INFO L93 Difference]: Finished difference Result 52 states and 71 transitions. [2024-11-21 20:52:24,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 20:52:24,606 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 29 [2024-11-21 20:52:24,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:52:24,613 INFO L225 Difference]: With dead ends: 52 [2024-11-21 20:52:24,613 INFO L226 Difference]: Without dead ends: 25 [2024-11-21 20:52:24,616 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 20:52:24,619 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 1 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-21 20:52:24,622 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 54 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-21 20:52:24,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-11-21 20:52:24,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2024-11-21 20:52:24,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 states have internal predecessors, (22), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-21 20:52:24,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2024-11-21 20:52:24,654 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 29 [2024-11-21 20:52:24,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:52:24,655 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2024-11-21 20:52:24,655 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-21 20:52:24,656 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2024-11-21 20:52:24,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-21 20:52:24,657 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:52:24,658 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:52:24,658 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-21 20:52:24,658 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:52:24,659 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:52:24,659 INFO L85 PathProgramCache]: Analyzing trace with hash 916084580, now seen corresponding path program 1 times [2024-11-21 20:52:24,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:52:24,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871500069] [2024-11-21 20:52:24,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 20:52:24,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:52:24,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 20:52:24,847 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-21 20:52:24,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:52:24,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871500069] [2024-11-21 20:52:24,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871500069] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 20:52:24,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1647443823] [2024-11-21 20:52:24,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 20:52:24,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:52:24,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 20:52:24,877 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-21 20:52:24,885 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-21 20:52:24,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 20:52:24,959 INFO L255 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-21 20:52:24,963 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 20:52:24,981 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-21 20:52:24,981 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-21 20:52:24,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1647443823] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 20:52:24,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-21 20:52:24,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-21 20:52:24,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338201858] [2024-11-21 20:52:24,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 20:52:24,983 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 20:52:24,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:52:24,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 20:52:24,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-21 20:52:24,984 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-21 20:52:24,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:52:24,994 INFO L93 Difference]: Finished difference Result 43 states and 53 transitions. [2024-11-21 20:52:24,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 20:52:24,995 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 31 [2024-11-21 20:52:24,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:52:24,996 INFO L225 Difference]: With dead ends: 43 [2024-11-21 20:52:24,996 INFO L226 Difference]: Without dead ends: 26 [2024-11-21 20:52:24,996 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-21 20:52:24,997 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 1 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-21 20:52:24,997 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 48 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-21 20:52:24,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-11-21 20:52:25,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2024-11-21 20:52:25,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 20 states have (on average 1.15) internal successors, (23), 20 states have internal predecessors, (23), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-21 20:52:25,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2024-11-21 20:52:25,002 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 31 [2024-11-21 20:52:25,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:52:25,002 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2024-11-21 20:52:25,002 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-21 20:52:25,002 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2024-11-21 20:52:25,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-21 20:52:25,003 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:52:25,003 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:52:25,013 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-21 20:52:25,207 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:52:25,208 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:52:25,208 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:52:25,208 INFO L85 PathProgramCache]: Analyzing trace with hash -456025118, now seen corresponding path program 1 times [2024-11-21 20:52:25,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:52:25,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192916310] [2024-11-21 20:52:25,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 20:52:25,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:52:25,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 20:52:25,305 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-21 20:52:25,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:52:25,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192916310] [2024-11-21 20:52:25,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192916310] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 20:52:25,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1134194102] [2024-11-21 20:52:25,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 20:52:25,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:52:25,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 20:52:25,311 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-21 20:52:25,314 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-21 20:52:25,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 20:52:25,403 INFO L255 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-21 20:52:25,404 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 20:52:25,418 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-21 20:52:25,422 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-21 20:52:25,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1134194102] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 20:52:25,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-21 20:52:25,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-21 20:52:25,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626729817] [2024-11-21 20:52:25,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 20:52:25,423 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 20:52:25,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:52:25,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 20:52:25,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-21 20:52:25,424 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-21 20:52:25,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:52:25,444 INFO L93 Difference]: Finished difference Result 40 states and 45 transitions. [2024-11-21 20:52:25,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 20:52:25,444 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 37 [2024-11-21 20:52:25,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:52:25,445 INFO L225 Difference]: With dead ends: 40 [2024-11-21 20:52:25,445 INFO L226 Difference]: Without dead ends: 27 [2024-11-21 20:52:25,445 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-21 20:52:25,446 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 1 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-21 20:52:25,446 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 46 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-21 20:52:25,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-11-21 20:52:25,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2024-11-21 20:52:25,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 21 states have internal predecessors, (24), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-21 20:52:25,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2024-11-21 20:52:25,450 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 37 [2024-11-21 20:52:25,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:52:25,451 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2024-11-21 20:52:25,451 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-21 20:52:25,451 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2024-11-21 20:52:25,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-21 20:52:25,452 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:52:25,452 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:52:25,462 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-21 20:52:25,653 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-11-21 20:52:25,653 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:52:25,654 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:52:25,655 INFO L85 PathProgramCache]: Analyzing trace with hash -1225475744, now seen corresponding path program 1 times [2024-11-21 20:52:25,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:52:25,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084551590] [2024-11-21 20:52:25,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 20:52:25,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:52:25,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 20:52:25,725 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-21 20:52:25,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:52:25,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084551590] [2024-11-21 20:52:25,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084551590] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 20:52:25,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [630259960] [2024-11-21 20:52:25,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 20:52:25,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:52:25,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 20:52:25,732 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-21 20:52:25,733 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-21 20:52:25,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 20:52:25,788 INFO L255 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-21 20:52:25,790 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 20:52:25,811 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-21 20:52:25,811 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 20:52:25,851 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-21 20:52:25,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [630259960] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 20:52:25,853 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 20:52:25,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-21 20:52:25,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016221800] [2024-11-21 20:52:25,853 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 20:52:25,854 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-21 20:52:25,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:52:25,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-21 20:52:25,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-21 20:52:25,855 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-21 20:52:25,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:52:25,876 INFO L93 Difference]: Finished difference Result 53 states and 63 transitions. [2024-11-21 20:52:25,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-21 20:52:25,878 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 39 [2024-11-21 20:52:25,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:52:25,878 INFO L225 Difference]: With dead ends: 53 [2024-11-21 20:52:25,878 INFO L226 Difference]: Without dead ends: 32 [2024-11-21 20:52:25,879 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-21 20:52:25,879 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 2 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-21 20:52:25,879 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 91 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-21 20:52:25,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-11-21 20:52:25,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2024-11-21 20:52:25,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 27 states have (on average 1.1111111111111112) internal successors, (30), 27 states have internal predecessors, (30), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-21 20:52:25,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2024-11-21 20:52:25,885 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 39 [2024-11-21 20:52:25,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:52:25,887 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2024-11-21 20:52:25,888 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-21 20:52:25,888 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2024-11-21 20:52:25,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-21 20:52:25,888 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:52:25,888 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:52:25,896 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-21 20:52:26,089 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:52:26,090 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:52:26,090 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:52:26,090 INFO L85 PathProgramCache]: Analyzing trace with hash 109015834, now seen corresponding path program 2 times [2024-11-21 20:52:26,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:52:26,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870859838] [2024-11-21 20:52:26,091 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-21 20:52:26,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:52:26,138 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-21 20:52:26,138 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:52:26,212 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-21 20:52:26,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:52:26,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870859838] [2024-11-21 20:52:26,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870859838] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 20:52:26,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1490187527] [2024-11-21 20:52:26,213 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-21 20:52:26,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:52:26,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 20:52:26,215 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-21 20:52:26,216 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-21 20:52:26,271 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-21 20:52:26,272 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:52:26,272 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-21 20:52:26,274 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 20:52:26,316 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-21 20:52:26,316 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 20:52:26,381 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-21 20:52:26,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1490187527] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 20:52:26,381 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 20:52:26,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 14 [2024-11-21 20:52:26,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662394700] [2024-11-21 20:52:26,381 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 20:52:26,382 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-21 20:52:26,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:52:26,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-21 20:52:26,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-11-21 20:52:26,383 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 14 states have internal predecessors, (52), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-21 20:52:26,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:52:26,436 INFO L93 Difference]: Finished difference Result 68 states and 85 transitions. [2024-11-21 20:52:26,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-21 20:52:26,437 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 14 states have internal predecessors, (52), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) Word has length 45 [2024-11-21 20:52:26,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:52:26,438 INFO L225 Difference]: With dead ends: 68 [2024-11-21 20:52:26,438 INFO L226 Difference]: Without dead ends: 47 [2024-11-21 20:52:26,439 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-11-21 20:52:26,440 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 3 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-21 20:52:26,441 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 85 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-21 20:52:26,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-11-21 20:52:26,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2024-11-21 20:52:26,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 41 states have (on average 1.0731707317073171) internal successors, (44), 41 states have internal predecessors, (44), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-21 20:52:26,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2024-11-21 20:52:26,449 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 45 [2024-11-21 20:52:26,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:52:26,449 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2024-11-21 20:52:26,450 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 14 states have internal predecessors, (52), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-21 20:52:26,450 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2024-11-21 20:52:26,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-21 20:52:26,451 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:52:26,451 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:52:26,460 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-21 20:52:26,651 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:52:26,652 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:52:26,652 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:52:26,652 INFO L85 PathProgramCache]: Analyzing trace with hash -1183684596, now seen corresponding path program 3 times [2024-11-21 20:52:26,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:52:26,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125410883] [2024-11-21 20:52:26,653 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-21 20:52:26,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:52:26,683 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-21 20:52:26,684 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:52:26,714 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 32 proven. 4 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2024-11-21 20:52:26,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:52:26,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125410883] [2024-11-21 20:52:26,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125410883] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 20:52:26,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [237000401] [2024-11-21 20:52:26,715 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-21 20:52:26,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:52:26,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 20:52:26,717 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-21 20:52:26,719 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-21 20:52:26,777 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-21 20:52:26,777 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:52:26,778 INFO L255 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-21 20:52:26,779 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 20:52:26,791 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 32 proven. 4 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2024-11-21 20:52:26,791 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 20:52:26,820 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 32 proven. 4 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2024-11-21 20:52:26,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [237000401] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 20:52:26,821 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 20:52:26,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2024-11-21 20:52:26,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788297943] [2024-11-21 20:52:26,821 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 20:52:26,821 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-21 20:52:26,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:52:26,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-21 20:52:26,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-11-21 20:52:26,822 INFO L87 Difference]: Start difference. First operand 46 states and 50 transitions. Second operand has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-21 20:52:26,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:52:26,840 INFO L93 Difference]: Finished difference Result 75 states and 88 transitions. [2024-11-21 20:52:26,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-21 20:52:26,840 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 63 [2024-11-21 20:52:26,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:52:26,841 INFO L225 Difference]: With dead ends: 75 [2024-11-21 20:52:26,841 INFO L226 Difference]: Without dead ends: 54 [2024-11-21 20:52:26,841 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-11-21 20:52:26,842 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 2 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-21 20:52:26,842 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 71 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-21 20:52:26,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-11-21 20:52:26,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2024-11-21 20:52:26,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 49 states have (on average 1.0612244897959184) internal successors, (52), 49 states have internal predecessors, (52), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-21 20:52:26,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2024-11-21 20:52:26,847 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 63 [2024-11-21 20:52:26,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:52:26,847 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 58 transitions. [2024-11-21 20:52:26,847 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-21 20:52:26,847 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 58 transitions. [2024-11-21 20:52:26,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-21 20:52:26,848 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:52:26,848 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 10, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:52:26,855 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-21 20:52:27,048 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:52:27,049 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:52:27,050 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:52:27,050 INFO L85 PathProgramCache]: Analyzing trace with hash 1199372036, now seen corresponding path program 4 times [2024-11-21 20:52:27,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:52:27,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640128043] [2024-11-21 20:52:27,050 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-21 20:52:27,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:52:27,093 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-21 20:52:27,093 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:52:27,222 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 176 proven. 36 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-21 20:52:27,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:52:27,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640128043] [2024-11-21 20:52:27,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640128043] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 20:52:27,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [369037762] [2024-11-21 20:52:27,224 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-21 20:52:27,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:52:27,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 20:52:27,226 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-21 20:52:27,227 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-21 20:52:27,316 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-21 20:52:27,316 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:52:27,319 INFO L255 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-21 20:52:27,323 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 20:52:27,358 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 176 proven. 36 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-21 20:52:27,358 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 20:52:27,465 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 176 proven. 36 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-21 20:52:27,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [369037762] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 20:52:27,465 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 20:52:27,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2024-11-21 20:52:27,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645440975] [2024-11-21 20:52:27,466 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 20:52:27,466 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-21 20:52:27,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:52:27,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-21 20:52:27,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2024-11-21 20:52:27,467 INFO L87 Difference]: Start difference. First operand 54 states and 58 transitions. Second operand has 16 states, 16 states have (on average 3.1875) internal successors, (51), 16 states have internal predecessors, (51), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-21 20:52:27,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:52:27,514 INFO L93 Difference]: Finished difference Result 99 states and 116 transitions. [2024-11-21 20:52:27,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-21 20:52:27,515 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.1875) internal successors, (51), 16 states have internal predecessors, (51), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 87 [2024-11-21 20:52:27,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:52:27,516 INFO L225 Difference]: With dead ends: 99 [2024-11-21 20:52:27,516 INFO L226 Difference]: Without dead ends: 70 [2024-11-21 20:52:27,516 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2024-11-21 20:52:27,517 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 2 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-21 20:52:27,517 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 163 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-21 20:52:27,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2024-11-21 20:52:27,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2024-11-21 20:52:27,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 65 states have (on average 1.0461538461538462) internal successors, (68), 65 states have internal predecessors, (68), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-21 20:52:27,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 74 transitions. [2024-11-21 20:52:27,523 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 74 transitions. Word has length 87 [2024-11-21 20:52:27,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:52:27,523 INFO L471 AbstractCegarLoop]: Abstraction has 70 states and 74 transitions. [2024-11-21 20:52:27,523 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.1875) internal successors, (51), 16 states have internal predecessors, (51), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-21 20:52:27,523 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 74 transitions. [2024-11-21 20:52:27,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2024-11-21 20:52:27,525 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:52:27,525 INFO L215 NwaCegarLoop]: trace histogram [42, 42, 10, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:52:27,532 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-21 20:52:27,726 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:52:27,726 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:52:27,726 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:52:27,726 INFO L85 PathProgramCache]: Analyzing trace with hash 677371124, now seen corresponding path program 5 times [2024-11-21 20:52:27,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:52:27,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197278677] [2024-11-21 20:52:27,727 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-21 20:52:27,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:52:27,865 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) [2024-11-21 20:52:27,869 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:52:28,214 INFO L134 CoverageAnalysis]: Checked inductivity of 1964 backedges. 0 proven. 1044 refuted. 0 times theorem prover too weak. 920 trivial. 0 not checked. [2024-11-21 20:52:28,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:52:28,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197278677] [2024-11-21 20:52:28,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197278677] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 20:52:28,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1871879719] [2024-11-21 20:52:28,215 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-21 20:52:28,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:52:28,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 20:52:28,217 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-21 20:52:28,219 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-21 20:52:28,515 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) [2024-11-21 20:52:28,516 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:52:28,519 INFO L255 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-21 20:52:28,522 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 20:52:28,559 INFO L134 CoverageAnalysis]: Checked inductivity of 1964 backedges. 844 proven. 196 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-11-21 20:52:28,560 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 20:52:28,865 INFO L134 CoverageAnalysis]: Checked inductivity of 1964 backedges. 0 proven. 1044 refuted. 0 times theorem prover too weak. 920 trivial. 0 not checked. [2024-11-21 20:52:28,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1871879719] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 20:52:28,865 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 20:52:28,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 32 [2024-11-21 20:52:28,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723150875] [2024-11-21 20:52:28,865 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 20:52:28,866 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-21 20:52:28,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:52:28,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-21 20:52:28,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2024-11-21 20:52:28,867 INFO L87 Difference]: Start difference. First operand 70 states and 74 transitions. Second operand has 32 states, 32 states have (on average 2.71875) internal successors, (87), 32 states have internal predecessors, (87), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-21 20:52:28,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:52:28,935 INFO L93 Difference]: Finished difference Result 147 states and 172 transitions. [2024-11-21 20:52:28,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-21 20:52:28,935 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.71875) internal successors, (87), 32 states have internal predecessors, (87), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 135 [2024-11-21 20:52:28,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:52:28,936 INFO L225 Difference]: With dead ends: 147 [2024-11-21 20:52:28,936 INFO L226 Difference]: Without dead ends: 102 [2024-11-21 20:52:28,937 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 255 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2024-11-21 20:52:28,938 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 2 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-21 20:52:28,938 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 186 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-21 20:52:28,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2024-11-21 20:52:28,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2024-11-21 20:52:28,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 97 states have (on average 1.0309278350515463) internal successors, (100), 97 states have internal predecessors, (100), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-21 20:52:28,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 106 transitions. [2024-11-21 20:52:28,946 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 106 transitions. Word has length 135 [2024-11-21 20:52:28,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:52:28,946 INFO L471 AbstractCegarLoop]: Abstraction has 102 states and 106 transitions. [2024-11-21 20:52:28,946 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.71875) internal successors, (87), 32 states have internal predecessors, (87), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-21 20:52:28,946 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 106 transitions. [2024-11-21 20:52:28,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2024-11-21 20:52:28,949 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:52:28,949 INFO L215 NwaCegarLoop]: trace histogram [90, 90, 10, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:52:28,963 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-21 20:52:29,152 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:52:29,153 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:52:29,154 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:52:29,154 INFO L85 PathProgramCache]: Analyzing trace with hash 704432340, now seen corresponding path program 6 times [2024-11-21 20:52:29,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:52:29,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619845708] [2024-11-21 20:52:29,154 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-21 20:52:29,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:52:29,180 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-11-21 20:52:29,181 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:52:29,228 INFO L134 CoverageAnalysis]: Checked inductivity of 8396 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8395 trivial. 0 not checked. [2024-11-21 20:52:29,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:52:29,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619845708] [2024-11-21 20:52:29,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619845708] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 20:52:29,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1697841015] [2024-11-21 20:52:29,229 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-21 20:52:29,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:52:29,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 20:52:29,233 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-21 20:52:29,240 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-21 20:52:29,326 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-11-21 20:52:29,326 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:52:29,327 INFO L255 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-21 20:52:29,330 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 20:52:29,343 INFO L134 CoverageAnalysis]: Checked inductivity of 8396 backedges. 3730 proven. 1 refuted. 0 times theorem prover too weak. 4665 trivial. 0 not checked. [2024-11-21 20:52:29,344 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 20:52:29,369 INFO L134 CoverageAnalysis]: Checked inductivity of 8396 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8395 trivial. 0 not checked. [2024-11-21 20:52:29,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1697841015] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 20:52:29,369 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 20:52:29,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-21 20:52:29,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251527177] [2024-11-21 20:52:29,370 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 20:52:29,370 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-21 20:52:29,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:52:29,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-21 20:52:29,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-21 20:52:29,371 INFO L87 Difference]: Start difference. First operand 102 states and 106 transitions. Second operand has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-21 20:52:29,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:52:29,389 INFO L93 Difference]: Finished difference Result 179 states and 186 transitions. [2024-11-21 20:52:29,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-21 20:52:29,390 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 231 [2024-11-21 20:52:29,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:52:29,391 INFO L225 Difference]: With dead ends: 179 [2024-11-21 20:52:29,391 INFO L226 Difference]: Without dead ends: 108 [2024-11-21 20:52:29,392 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 464 GetRequests, 459 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-21 20:52:29,392 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 2 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-21 20:52:29,392 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 67 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-21 20:52:29,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2024-11-21 20:52:29,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2024-11-21 20:52:29,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 103 states have (on average 1.029126213592233) internal successors, (106), 103 states have internal predecessors, (106), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-21 20:52:29,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 112 transitions. [2024-11-21 20:52:29,399 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 112 transitions. Word has length 231 [2024-11-21 20:52:29,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:52:29,400 INFO L471 AbstractCegarLoop]: Abstraction has 108 states and 112 transitions. [2024-11-21 20:52:29,400 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-21 20:52:29,400 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 112 transitions. [2024-11-21 20:52:29,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2024-11-21 20:52:29,402 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:52:29,402 INFO L215 NwaCegarLoop]: trace histogram [90, 90, 10, 10, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:52:29,415 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-21 20:52:29,602 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-21 20:52:29,603 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:52:29,604 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:52:29,604 INFO L85 PathProgramCache]: Analyzing trace with hash 1257848142, now seen corresponding path program 7 times [2024-11-21 20:52:29,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:52:29,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765343550] [2024-11-21 20:52:29,604 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-21 20:52:29,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:52:29,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 20:52:29,981 INFO L134 CoverageAnalysis]: Checked inductivity of 8411 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 8311 trivial. 0 not checked. [2024-11-21 20:52:29,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:52:29,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765343550] [2024-11-21 20:52:29,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765343550] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 20:52:29,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2095068709] [2024-11-21 20:52:29,982 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-21 20:52:29,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:52:29,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 20:52:29,987 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-21 20:52:29,988 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-21 20:52:30,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 20:52:30,129 INFO L255 TraceCheckSpWp]: Trace formula consists of 692 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-21 20:52:30,132 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 20:52:30,179 INFO L134 CoverageAnalysis]: Checked inductivity of 8411 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 8311 trivial. 0 not checked. [2024-11-21 20:52:30,179 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 20:52:30,407 INFO L134 CoverageAnalysis]: Checked inductivity of 8411 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 8311 trivial. 0 not checked. [2024-11-21 20:52:30,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2095068709] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 20:52:30,407 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 20:52:30,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2024-11-21 20:52:30,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340735815] [2024-11-21 20:52:30,408 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 20:52:30,408 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-21 20:52:30,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:52:30,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-21 20:52:30,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-21 20:52:30,409 INFO L87 Difference]: Start difference. First operand 108 states and 112 transitions. Second operand has 25 states, 25 states have (on average 2.8) internal successors, (70), 25 states have internal predecessors, (70), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-21 20:52:30,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:52:30,479 INFO L93 Difference]: Finished difference Result 217 states and 236 transitions. [2024-11-21 20:52:30,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-21 20:52:30,480 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.8) internal successors, (70), 25 states have internal predecessors, (70), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 237 [2024-11-21 20:52:30,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:52:30,481 INFO L225 Difference]: With dead ends: 217 [2024-11-21 20:52:30,481 INFO L226 Difference]: Without dead ends: 132 [2024-11-21 20:52:30,482 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 485 GetRequests, 462 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-21 20:52:30,482 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 2 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-21 20:52:30,482 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 113 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-21 20:52:30,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2024-11-21 20:52:30,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2024-11-21 20:52:30,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 127 states have (on average 1.0236220472440944) internal successors, (130), 127 states have internal predecessors, (130), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-21 20:52:30,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 136 transitions. [2024-11-21 20:52:30,496 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 136 transitions. Word has length 237 [2024-11-21 20:52:30,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:52:30,497 INFO L471 AbstractCegarLoop]: Abstraction has 132 states and 136 transitions. [2024-11-21 20:52:30,497 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.8) internal successors, (70), 25 states have internal predecessors, (70), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-21 20:52:30,497 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 136 transitions. [2024-11-21 20:52:30,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2024-11-21 20:52:30,503 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:52:30,503 INFO L215 NwaCegarLoop]: trace histogram [90, 90, 22, 22, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:52:30,515 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-21 20:52:30,703 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-21 20:52:30,704 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:52:30,704 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:52:30,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1324113610, now seen corresponding path program 8 times [2024-11-21 20:52:30,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:52:30,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638021473] [2024-11-21 20:52:30,705 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-21 20:52:30,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:52:30,765 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-21 20:52:30,769 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:52:31,508 INFO L134 CoverageAnalysis]: Checked inductivity of 8795 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 8311 trivial. 0 not checked. [2024-11-21 20:52:31,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:52:31,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638021473] [2024-11-21 20:52:31,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638021473] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 20:52:31,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [384454919] [2024-11-21 20:52:31,509 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-21 20:52:31,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:52:31,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 20:52:31,511 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-21 20:52:31,516 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-21 20:52:31,673 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-21 20:52:31,673 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:52:31,677 INFO L255 TraceCheckSpWp]: Trace formula consists of 800 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-21 20:52:31,680 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 20:52:31,746 INFO L134 CoverageAnalysis]: Checked inductivity of 8795 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 8311 trivial. 0 not checked. [2024-11-21 20:52:31,747 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 20:52:32,417 INFO L134 CoverageAnalysis]: Checked inductivity of 8795 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 8311 trivial. 0 not checked. [2024-11-21 20:52:32,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [384454919] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 20:52:32,418 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 20:52:32,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2024-11-21 20:52:32,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717548794] [2024-11-21 20:52:32,418 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 20:52:32,419 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-21 20:52:32,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:52:32,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-21 20:52:32,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2024-11-21 20:52:32,421 INFO L87 Difference]: Start difference. First operand 132 states and 136 transitions. Second operand has 49 states, 49 states have (on average 2.4081632653061225) internal successors, (118), 49 states have internal predecessors, (118), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-21 20:52:32,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:52:32,523 INFO L93 Difference]: Finished difference Result 265 states and 296 transitions. [2024-11-21 20:52:32,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-21 20:52:32,524 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.4081632653061225) internal successors, (118), 49 states have internal predecessors, (118), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 261 [2024-11-21 20:52:32,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:52:32,525 INFO L225 Difference]: With dead ends: 265 [2024-11-21 20:52:32,525 INFO L226 Difference]: Without dead ends: 180 [2024-11-21 20:52:32,526 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 545 GetRequests, 498 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2024-11-21 20:52:32,526 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 2 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-21 20:52:32,527 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 113 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-21 20:52:32,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2024-11-21 20:52:32,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2024-11-21 20:52:32,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 175 states have (on average 1.0171428571428571) internal successors, (178), 175 states have internal predecessors, (178), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-21 20:52:32,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 184 transitions. [2024-11-21 20:52:32,535 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 184 transitions. Word has length 261 [2024-11-21 20:52:32,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:52:32,535 INFO L471 AbstractCegarLoop]: Abstraction has 180 states and 184 transitions. [2024-11-21 20:52:32,535 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.4081632653061225) internal successors, (118), 49 states have internal predecessors, (118), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-21 20:52:32,535 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 184 transitions. [2024-11-21 20:52:32,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2024-11-21 20:52:32,537 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:52:32,538 INFO L215 NwaCegarLoop]: trace histogram [90, 90, 46, 46, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:52:32,548 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-21 20:52:32,738 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-21 20:52:32,739 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:52:32,739 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:52:32,739 INFO L85 PathProgramCache]: Analyzing trace with hash 941015302, now seen corresponding path program 9 times [2024-11-21 20:52:32,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:52:32,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957275733] [2024-11-21 20:52:32,739 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-21 20:52:32,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:52:32,796 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-21 20:52:32,796 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:52:32,848 INFO L134 CoverageAnalysis]: Checked inductivity of 10427 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 10411 trivial. 0 not checked. [2024-11-21 20:52:32,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:52:32,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957275733] [2024-11-21 20:52:32,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957275733] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 20:52:32,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1951372071] [2024-11-21 20:52:32,849 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-21 20:52:32,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:52:32,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 20:52:32,851 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-21 20:52:32,854 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-21 20:52:32,987 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-21 20:52:32,987 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:52:32,989 INFO L255 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-21 20:52:32,993 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 20:52:33,017 INFO L134 CoverageAnalysis]: Checked inductivity of 10427 backedges. 3730 proven. 16 refuted. 0 times theorem prover too weak. 6681 trivial. 0 not checked. [2024-11-21 20:52:33,018 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 20:52:33,090 INFO L134 CoverageAnalysis]: Checked inductivity of 10427 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 10411 trivial. 0 not checked. [2024-11-21 20:52:33,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1951372071] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 20:52:33,091 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 20:52:33,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-21 20:52:33,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478859609] [2024-11-21 20:52:33,091 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 20:52:33,091 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-21 20:52:33,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:52:33,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-21 20:52:33,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-21 20:52:33,092 INFO L87 Difference]: Start difference. First operand 180 states and 184 transitions. Second operand has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 13 states have internal predecessors, (46), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-21 20:52:33,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:52:33,131 INFO L93 Difference]: Finished difference Result 263 states and 273 transitions. [2024-11-21 20:52:33,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-21 20:52:33,131 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 13 states have internal predecessors, (46), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 309 [2024-11-21 20:52:33,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:52:33,132 INFO L225 Difference]: With dead ends: 263 [2024-11-21 20:52:33,132 INFO L226 Difference]: Without dead ends: 192 [2024-11-21 20:52:33,133 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 623 GetRequests, 612 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-21 20:52:33,133 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 2 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-21 20:52:33,133 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 130 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-21 20:52:33,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2024-11-21 20:52:33,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2024-11-21 20:52:33,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 187 states have (on average 1.0160427807486632) internal successors, (190), 187 states have internal predecessors, (190), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-21 20:52:33,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 196 transitions. [2024-11-21 20:52:33,147 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 196 transitions. Word has length 309 [2024-11-21 20:52:33,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:52:33,148 INFO L471 AbstractCegarLoop]: Abstraction has 192 states and 196 transitions. [2024-11-21 20:52:33,148 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 13 states have internal predecessors, (46), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-21 20:52:33,148 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 196 transitions. [2024-11-21 20:52:33,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2024-11-21 20:52:33,150 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:52:33,150 INFO L215 NwaCegarLoop]: trace histogram [90, 90, 46, 46, 10, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:52:33,157 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-21 20:52:33,351 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-21 20:52:33,351 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:52:33,351 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:52:33,351 INFO L85 PathProgramCache]: Analyzing trace with hash 2080648058, now seen corresponding path program 10 times [2024-11-21 20:52:33,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:52:33,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794001008] [2024-11-21 20:52:33,352 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-21 20:52:33,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:52:33,426 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-21 20:52:33,426 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:52:34,383 INFO L134 CoverageAnalysis]: Checked inductivity of 10511 backedges. 3728 proven. 900 refuted. 0 times theorem prover too weak. 5883 trivial. 0 not checked. [2024-11-21 20:52:34,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:52:34,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794001008] [2024-11-21 20:52:34,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794001008] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 20:52:34,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [831798735] [2024-11-21 20:52:34,384 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-21 20:52:34,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:52:34,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 20:52:34,390 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-21 20:52:34,393 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-21 20:52:34,589 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-21 20:52:34,590 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:52:34,593 INFO L255 TraceCheckSpWp]: Trace formula consists of 1058 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-21 20:52:34,598 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 20:52:34,668 INFO L134 CoverageAnalysis]: Checked inductivity of 10511 backedges. 3728 proven. 900 refuted. 0 times theorem prover too weak. 5883 trivial. 0 not checked. [2024-11-21 20:52:34,668 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 20:52:35,696 INFO L134 CoverageAnalysis]: Checked inductivity of 10511 backedges. 3728 proven. 900 refuted. 0 times theorem prover too weak. 5883 trivial. 0 not checked. [2024-11-21 20:52:35,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [831798735] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 20:52:35,696 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 20:52:35,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 64 [2024-11-21 20:52:35,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146094770] [2024-11-21 20:52:35,697 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 20:52:35,697 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2024-11-21 20:52:35,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:52:35,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2024-11-21 20:52:35,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2016, Invalid=2016, Unknown=0, NotChecked=0, Total=4032 [2024-11-21 20:52:35,700 INFO L87 Difference]: Start difference. First operand 192 states and 196 transitions. Second operand has 64 states, 64 states have (on average 2.296875) internal successors, (147), 64 states have internal predecessors, (147), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-21 20:52:35,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:52:35,827 INFO L93 Difference]: Finished difference Result 351 states and 392 transitions. [2024-11-21 20:52:35,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2024-11-21 20:52:35,827 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 2.296875) internal successors, (147), 64 states have internal predecessors, (147), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 321 [2024-11-21 20:52:35,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:52:35,829 INFO L225 Difference]: With dead ends: 351 [2024-11-21 20:52:35,829 INFO L226 Difference]: Without dead ends: 256 [2024-11-21 20:52:35,830 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 673 GetRequests, 611 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=2016, Invalid=2016, Unknown=0, NotChecked=0, Total=4032 [2024-11-21 20:52:35,831 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 2 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-21 20:52:35,832 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 186 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-21 20:52:35,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2024-11-21 20:52:35,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 256. [2024-11-21 20:52:35,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 251 states have (on average 1.0119521912350598) internal successors, (254), 251 states have internal predecessors, (254), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-21 20:52:35,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 260 transitions. [2024-11-21 20:52:35,843 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 260 transitions. Word has length 321 [2024-11-21 20:52:35,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:52:35,843 INFO L471 AbstractCegarLoop]: Abstraction has 256 states and 260 transitions. [2024-11-21 20:52:35,844 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 2.296875) internal successors, (147), 64 states have internal predecessors, (147), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-21 20:52:35,844 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 260 transitions. [2024-11-21 20:52:35,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 514 [2024-11-21 20:52:35,845 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:52:35,846 INFO L215 NwaCegarLoop]: trace histogram [186, 186, 46, 46, 10, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:52:35,854 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-21 20:52:36,047 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-21 20:52:36,047 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:52:36,047 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:52:36,047 INFO L85 PathProgramCache]: Analyzing trace with hash 1610666810, now seen corresponding path program 11 times [2024-11-21 20:52:36,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:52:36,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082842153] [2024-11-21 20:52:36,048 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-21 20:52:36,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:52:39,870 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 126 check-sat command(s) [2024-11-21 20:52:39,871 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:52:43,185 INFO L134 CoverageAnalysis]: Checked inductivity of 37199 backedges. 0 proven. 19476 refuted. 0 times theorem prover too weak. 17723 trivial. 0 not checked. [2024-11-21 20:52:43,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:52:43,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082842153] [2024-11-21 20:52:43,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082842153] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 20:52:43,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1474518345] [2024-11-21 20:52:43,186 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-21 20:52:43,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:52:43,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 20:52:43,188 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-21 20:52:43,189 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process